Air-lift pump.



puin srans ragni- T OTTO E. HARRIS, Ol" INDIANAPOLIS, INDIANA, ASSIGNOROF ONE-HALF TO ORAN M.

' PRUITT, OF INDIANAPOLIS, INDIANA.

AIR-LIFT BUMP To all whom it may concern:

Be it known tnat I, O'r'ro E. HARRIS, a citizen'ol` the United States,residing at Indianapolis, in the county of Marion and State of' Indiana,have invented certain new and useful Improvements in rlndilift Pumps, olwhich the following is a specification.

The object of my invention is'to produce a simple,ellicient centgipzzleair lift.

The accompanying drawing, which is an axial section, illustrates myinvention.

In the drawings, 10 indicates a base casting having a lower opening 11and perforations or slots 12 in its walls. Formed in the upper end ofcasting` lOvis a spider 13 having a central hub 14 threaded to receive apipe 15 which, at its lower end, is perforated at 16. Surrounding pipe15 is a casing or pipe 17 which, al its lower end, is mountedin theupper end o'l casting 10 and at its upper end is threaded into acoupling 18. Threaded into the couplirur 1S above the upper end ofcasing 17, is a partition 19 the center of which` is threaded to receivethe upper end of a bell 20, the lower end of which is outwardly flaredto the walls ol casing 17 and extended below the upper end of pipe 15 soas to form an annular passage 21, :uljustable by means of thread incoupling 1S to regulate or close annular passage 21'.

Formed in casing 1() is a passage 22 which, at its lower end, is curvedupwardlr at the center of casing 10 immediataly above opening 11thereotband provided with a threaded end adapted to receive a lowerthreaded end of the nozzle 23 which, at its up er end, is carried abovethe uppermost pe. oration 16 and flared outwardly, as shown at 24. Theouter end of passage also is threaded to receive the lower threaded endof the air supply pipe 24. Threaded into the upper end of cou ling 18 isthe water pipe 25 which is extent ed upwardly to .the top of the well. The entire structure, which has been described, is adapted to beprojected downwardly into well casing 26, the external dimensions of thecasting 10 being a trifle less than the internal diameter of pipe 26.

In operation the structure is submerved in the water of the well to adesired' dept 1, de-

Specication of Letters Patent.

Application led October 14, 1907.

Patented April 28, M5408.

Serial No. 397,268.

l pending upon the desired lift, as is custoin ary, and air underpressure forced downwardly through pipe 24. rihis air passing upwardthrough nozzle 28 and out through the flared end 24 rushes u Wardthrough pipe 15 carrying the column o water therein. with it and at thesaine time drawing water upward through openings 11 and 12 into pipe 15,and also drawing water from the lower end of shell 17 through openings16 into pipe 1.5. As the stream o'i water and air emerges from the upperend of pipe 15 into bell 20 it draws water upward from shell,v 17through the annular passage 21, and the two streams combine in the bell2O and pass upward through pipe 25. By actual tests. I have very highlyellioient.

l claim as my invention:

l. An air. lift nozzle struc ture coni rising a central air nozzlehaving an outward-y flared upper end, and a straight water pipe sur-vrounding said nozzle and having induction openings in its lower endbelow the discharge end of the air nozzle.

2. An air lilt nozzle structure comprising a upper end and a straightwater pine surrounding said nozzle and having in uction openings at itslower end below the discharge end of the air nozzle, a shell surroundingsaid water pipe, the said water pipe having openingsin its lower wallforming a communication between its interior and the shell below thedischarge end ol the air nozzle, and a bell arranged within. said outershell at the upper end ot' the water pipe and forming an annular suctionopening around the upper' end of said water pipe.

3. An air lift nozzle structure comprising a main shell open at itsbottom, a tube arranged in said. shell and of smaller diameter than theshell and open at its bottom, a coupling member carried at the upper endof the main shell and adapted to receive the lower end of the waterpipe, a bell threaded at its upper end in said coupling member andhaving a lowerend outwardly anrldawnwardly flared and arranged over theu per end et' 'the inner tube, an air nozzle smaller than the infoundthe structure herein described to be central air nozzle having anoutwardly flared i my hand end seal at Indianapolis, Indiana,

ner tube and arranged therein in its open this second day of' October,A. D. one thou lower end and hevlng lts ulpper end outwardly ared, andan airsupp y tube extendsend nine hundred and seven. ing down alongsidea main shell to a point O. E'HARRIS. [L s.] 5, near the bottom thereofand thence upwardly Witnesses:

into the nozzle. i A. R. CRAIL, In witness whereof, I, have hereunto setJ. S. DAVIS.

